<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        .box{
            width: 100px;
            height: 100px;
            background-color: aqua;
        }
    </style>
</head>
<body >
    
    <ul>
       <dl>4</dl>
       <dl>2</dl>
       <dl>3</dl>
       <dl>1</dl>
    </ul>

    <ol>
        <li>列表项1</li>
        <li>列表项2</li>
        <li>列表项3</li>
    </ol>
  <div class="box" ></div>

    <script>

         //    2    3个月   每个月的兔子
        //    2   2   4  6  10  16  
    </script>
</body>
</html>